Kaisai 06RY1, Руководство по обслуживанию

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M thermal Mono
72 200208
Midea
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4.14 H8 Troubleshooting
Digital display output 4.14.1
Description 4.14.2

Pressure sensor error.

Mono stops running.

Error code is displayed on refrigerant system main control board for refrigerant system and user
interface.
Possible causes 4.14.3

Pressure sensor not connected properly or has malfunctioned.

Refrigerant system main PCB damaged.
Procedure 4.14.4
H8
No
High pressure sensor connection on
refrigerant system main PCB is loose
Yes
Ensure the sensor is connected properly
No
High pressure sensor has short-circuited
or failed
1
Yes
Replace the sensor
No
Replace refrigerant system main PCB
Notes:
1. Measure the resistance among the three terminals of the pressure sensor. If the resistance is of the order of mega Ohms or infinite, the pressure sensor
has failed. The pressure sensor connection on each type of refrigerant system main PCB is labelled in Figures 4-2.2, 4-2.4 and 4-2.6 in Part 4, 2.3 “Main
PCBs for Refrigerant System, Inverter Modules and Filter Boards”. Refer also to Part 2, 1 “Layout of Functional Components”.
Midea CAC Confidential
M thermal Mono
202008 73
4.15 P0, HP Troubleshooting
Digital display output 4.15.1
Description 4.15.2

P0 indicates suction pipe low pressure protection. When the suction pressure falls below 0.14MPa, the
system
displays P0 protection and Mono stops running. When the pressure rises above 0.30MPa, P0 is removed
and normal operation resumes.

HP indicates P0 protection has occurred 3 times in 60 minutes. When an HP error occurs, a manual system restart
is
required before the system can resume operation.

Error code is displayed on refrigerant system main control board for refrigerant system and user interface.
Possible causes 4.15.3

Low pressure switch not connected properly or has malfunctioned.

Insufficient refrigerant.

Low pressure side blockage.

Poor evaporator heat exchange in heating mode or DHW mode.

Insufficient water flow in cooling mode.

Main PCB damaged.
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Mono